Transfusion apparatus.



J. H BROWN.

TRANSFUSION APPARATUS.

APPLlCATiON FILED JUNE H. 1915.

1,176,945. Patented Mar. 28, 1916.

THB COLUMBIA PLANDGRAPH $0., WASHINGTON, D C.

TED e earner @FFTQE.

JAMES HOWARD BROWN, OF BOSTCN, MASSACHUSETTS.

TRANSFUSION APPARATUS.

ToaZZ whom it may concern: Be it known that LJAMus HOWARD BROWN, acitizen of the United States, residing at J a.- maica Plain, Bostrn,inthe county of, Suffolk and State of -Massachusetts, have inventedcertain new and useful Improvements in Transfusion Apparatus; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The present invention relates to an improvement in transfusionapparatus.

The object of the invention is to improve the apparatus and technic forblood or other transfusion operations.

To this end the invention consists in the transfusion apparatushereinafter described and particularly defined in the claims.

In the accompanying drawing illustrating the preferred form of theinvention, Figure l is a perspective view of the apparatus; Fig. 2 is aview of the same in horizontal positicn; and Fig. 3 is an end view.

The illustrated embodiment of the invention is as follows :The apparatusconsists of a glass cylinder 1 of the desired capacity, say of250 c. c.or 150 c. c., closed at its upper end by a cork stopper 2, and having aside tube 3 a little below thecork and a cannula A leading from thebottom of the cylinder. The cannula joins the cylinder in such positionthat it leads from the upper side of the cylinder when the latter isplaced on its side, with the side tube uppermost. The cannula bendsdownward as the cylinder lies on its side (see Fig. 2), and then in aninclined upwarddirection at an angle to the plane of the axes of thecylinder and side tube somewhat less than a right angle. From this lastbend, the cannula should not be more than two or three inches long, and

should taper gradually, as shown, and terminate in a beveled andburnished point about two or three mm. in diameter. The arrangement ofthe cannula at the angle specified (see Fig. 3) prevents the emptying ofthe cannula and entrance of air into it when the cylinder is laid on itsside, as shown in Fig. 2.

F or the tapered and burnished end of the cannula may be substituted aconstruction suitable for the attachment of a trocar or hypodermicneedle.

The device is used for the drawing of blood or other fluids from man orother ani-' Specification of Letters Patent.

Patented Mar. 28, 1916.

Application filed june 11, 1915. Serial No. 33,551.

mals, and for its injection into man or other animals, the fluidentering and'leaving. the cylinderthrough the cannula and inserted intothe body of the animal, or connected with a trocar or other instrumentso inserted. egress orentrance of air to the cylinder, and by connectionwith an air pump or a supply of compressed air, affords a means ofapplying suction or pressure to the surface of the contained fluid. Vihen used forblood transfusion, the cannula of the device is insertedinto the vein or artery of the donor and held upright until filled byvenous or arterial pressure. This usually takes not over two or threeminutes for a 250 c. c. tube. Being filled, the tube is withdrawn andheld on its side (Fig. 2) with the side piece uppermost to prevent theblood from running out. The cannula is new inserted in the vein orartery of the recipient and held in an upright position. A bulb pump isattached to the side tube and by a little pressure the tube is emptied,withdrawing the cannula while stilla little blood is left in it. Moretubes may be filled and emptied, using the same vein or artery, ifdesired. Pointing the cannula away from seems to be better than towardthe heart. Both ways may be used.

Having thus described the invention, what is claimed is,:

1. A transfusion device comprising a tubular container having adjacentits top a side opening, and a cannula at the bottom thereof, saidcontainer being adapted to be positioned on its side with said openinguppermost, and said cannula projecting laterally to the longitudinalaxis of the container and constituting a support for maintaining thesame in said position.

2. A transfusion device comprising a tubular container having adjacentits top a side opening, and a cannula at the bottom thereof, saidcontainer being adapted to be positioned on its side with said openinguppermost, and when so positioned, said cannula connecting with thecontainer adjacent the side thereof that is uppermost, and thenceextending downwardly and laterally from its point of connection.

3. A blood transfusion apparatus comprising a tubular container having aremovable closure at its top and a side tube adj acent its top, saidcontainer being adapted to be placed on its side with said tube project-The side tube affords provisions for i tainer when the latter is soplaced on its side. 7

4. A transfusion apparatus, comprising a container having a side tubeadjacent the top thereof, and a cannula at the bottom thereof, saidcannula consisting of a downwardly and laterally directed tube leadingfrom the upper side of the container when thelatter isplaced cn its sidewith the side tube uppermost, and said cannula having a taperedterminalfor insertion in the bodies of the donor and recipient.

5. A blood transfusion apparatus comprising a tubular container havingan opening at its top, a side tube adjacent said top,

6. A transfusion apparatus, comprising a container having an opening inits side ad= V jacen t the; top. thereof, and a cannula at the bottomthereof, saidcann'ula consistingof a downwardly and laterallydirected'tubelead ing from" the upper side" ofthe container whenthelatter is placed on itsside with the f side tube uppermost.

JAMES HOWARD BROWN.

Copies of this patent may be obtained for five cents each. by addressingthe Commissioner of Patents.

Washington.- -D. G. I r

